Malicious PDF — malware analysis report

Static analysis result for SHA-256 458ca1ab60556b85…

MALICIOUS

PDF

67.3 KB Created: 2021-06-02 00:43:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 119d29c815ddd83b44947e5b52f3b38e SHA-1: 8f0f3e158100b0388ee501a0a880773dfb8e9a51 SHA-256: 458ca1ab60556b857ce879d896b87f7e9bd9c291862e1f9a266531b4c8e3fa0a
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

This PDF was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains references to movie downloads, a common lure for phishing attacks. Several embedded URLs point to potential second-stage payloads, suggesting the document is designed to trick users into downloading malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://skrabl.pl/www/rpbd/fck/file/nenedesufodonepiri.pdf
    • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/a7a665649a599bc4762cede0129e76d3/kexurajiwagivinikobasufuj.pdf
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608afc8b0b507---vixasatatujenatafimod.pdf
    • https://oklogistic.lv/upload/file/sonuzerirojuj.pdf
    • http://waypl.pl/upload/File/guxofivise.pdf
    • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/503b2cfacd12cc7dc2c2c8f6006eb943/fovadonor.pdf
    • https://ferado.vn/userfiles/file/bakidux.pdf
    • http://azizolace.cz/images/file/kubonaratovizekozixowude.pdf
    • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609865b86ae11---77402498583.pdf
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/160922a504ca95---48738161947.pdf
    • https://accuratesearch.com/userfiles/file/zatuzanililoridurosojuka.pdf
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/v1i201jgjmo5h8dsppohf7d2rr/62997929846.pdf
    • http://fixmyhelicopter.com/project-new/christianbook/upload_images/file/24223736478.pdf
    • https://hpsoft.shop/upload/files/95580461858.pdf
    • https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089ede9856e5---79506002388.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=seniors+malayalam+full+hd+movie+free+download
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca4e.bin
3c443da928f93207ce1d4de97c2b4f01289cc7951a3c77425a53bbd719034f59
pdf-font-stream PDF embedded font (sfnt) at offset 0xCA4E 5504 bytes
font_01_sfnt_off0000dcee.bin
4006ffdf687698140c36d1759aa61c98287b0d79da354c59a098b844388cd32f
pdf-font-stream PDF embedded font (sfnt) at offset 0xDCEE 10236 bytes